outs for RA/BARO occupy the same dis-
play field on the PFD. Only one function
can be displayed at a time. The toggling
sequence is OFF, RA, BARO, and then
OFF again. The power-up default value of
the display field is OFF with no display.
• MINIMUMS – The MINIMUMS knob
can be used to set a radio altitude (RA)
reference (Figure 16-26) and/or a se-
lected barometric altitude (BARO) ref-
erence , such as a decision altitude (DA)
or a minimum descent altitude (MDA).
Either PFD minimums set knob can con-
trol the displayed minimum values on
both PFDs. If both display units have the
RA/BARO pushbutton selected to the
same function, then either crewmember
can change the RA or BARO on their re-
spective PFDs, and the cross-side PFD
will mirror the change. If dissimilar func-
tions are being displayed, and a change
occurs, whenever the two PFDs again
display the same function, they will syn-
chronize to the last set value for RA or
BARO. For example, if the pilot has
BARO displayed and the copilot has RA,
and the pilot changes the BARO setting,
the RA display will not change on the
copilot PFD. When the copilot does
change displays from RA to BARO, it
will synchronize to the last BARO value
that was set.
• STD – This pushbutton (Figure 16-26)
is used to select either the standard baro-
metric correction factor of 29.92 In-Hg
(inches of mercury) or 1013 HPA
(HectoPascals) on the PFD altitude tape
and digital display.
LEARJET 45 PILOT TRAINING MANUAL
16-38
FOR TRAINING PURPOSES ONLY
FlightSafety
international
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